Improvement in hand-stamps



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N PETERS PHoTo LTHOGRAPHER NASHINGTLN n C tinted statte j nient l E.

E. DIC H A Mln-E R LA iin, o i3 W- Y-o RK, NQY.

" Leners Paten: No. 92,264, dated .my 6,1869.

IMPROVQEMENT IN HAND-STAMPS.

The Schedule referred tcp in these Letters Patent n nd making part of-the lame.

.To all whom. it may concern Be itknow that I, E. D. CHAMBERLAIN, of the city,

county, and State of' New York, have invented a new and improved Hand-Stamp; andy I do hereby declare that the following is a full, clear, and exact description ot' the'construction and operation of' 'the same, reference being had to theaccompanyingdrawings, making a part of. this specification, in which Figure 1 is a side view. Figure 2 is atop View.

The object of this invention is to provide for the common handstamp a simple and convenient device,4

which will always indicate tothe eye the day of' the month to'whieh the. stamp is set, without putting the' operator to the inconvenience of turning the stamp bottom-up, .or of taking an impression, in order to as'- certain when he has turned the cylinder to the right point.

In the drawings- A is a common hand-stamp, provided'with the usual rotating-cylinders B C D, the formerffor the month, the latter for the year, and theintermediate one for the day ofthe month.

When setting these cylinders for any particular day of the month, it has heretofore been necessary to turn i the stamp bottom-up, an^d carefully turn the .cylinder until it was observed. that the figures came in the.

right place, when, by means of the spring-pawl, or catch p, the cylinder was confined in that place. This process-is awkward and inconvenient, and sometimes.v

takes considerable time.

To avoid it, I employ the following-described device,

which is remarkable no less for its accuracy and efficiency than for its simplicity and the ease and readiness with which it can be operated.

The iigures indicating the days of the month, from l up to 3l, are arranged at regular intervals around the disk O, and a pointer, m, is attiched to the stamp in such a manner as to point to some place on the edge of' the disk which canbeclearly and conveniently seen without vinverting or otherwise disturbing the stamp. l

As the disk` is rotated, the pointer will thus always point to some of the indicating gures. Such figure,

from the fact that the spaces between numbers are y uniform, will always bear a vcertain relation toy the number that is at the bottom ofthe disk and ready to give the impression..

For instance, it the pointcr'is so fixed (as in the drawings) that it points to the thirteenth 'number e from that which is ready to make the impression, then,

hy a short calculation,we can always ascertain what day of the month will he stamped from the dayto which the indicator points.l

Now, to save the necessity of any calculation, and to make the matter obvious at' alL times, I- arrange around the upper or horizontal disk liftwo rows of numbers, N N', each extending from l up to 31. The

outer row indicatesthe number at the bottom of'disk G, and ready to make the impression, an'd the inner row indicating the number to which the` linger mis pointing.

For example, if vdisk is fixed so as to bring the number3l at the bottom ofthe disk, the .pointer will" Apoint to -the number 1L. on the inner row of figures,

such number-'being next to the number 3l ou the outer,` row. I To set the stamp for any'day of' the month, look along the inner rowl of numbers for the figures imme-r i diately opposite to .those indicating that day in the outer row; then turn the disk until the pointer points` to the iigures thus found in the inner row. The day of the monthwillv then be atthe bottom of' the disk O,

and the stamp will be ready for ilse as described.

It is obvious 'that the two rows of' figures N N'f i might bear-ranged in an ellipse', in straight lines, or

in any other form that will bring them together, so

Witnesses Guo. B. TrrUs. Unas. H. BROWN. 

